Karsewa is the free service provided by a Sikh person for the construction or renovation of a Gurdwara. It can be in the form of labor or any other type of assistance. This service is not restricted to the construction work; it also involves an active role in social work.
The practice of Karsewa was initiated by the Sikh gurus, who were involved in the construction of new towns and religious buildings. Their example of voluntary contribution of labor towards the construction activities have been followed by their followers. This act of selfless service has become an important principle in Sikhism. It is seen as a path towards the realization of god.
In any construction or renovation work of a Gurdwara, a Sikh person irrespective of the social status makes it a point to contribute his/her service in it. Both the rich and the poor can be seen together in a construction work.